Repair king post for bolsters



R. O. SHAW. REPAIR KING) POST FOR BOLYSTERS. APPLICATION FILED NOV- 23,1920.

Patented Aug. 15, 1922.

Ross SHAW, or ivionrnnanoo'nnno, CANADmAS SIGNOR T0 cnnnninn can "a YFOUNDRY COMPANY, LIMITED, or MONTREAL, cannon.

REPAIR KING rosin ron memes;

naasnos.

Application filed Noveinber Serial n5; 426,0SQQ i l 0 (ZZZ whom it mayconcern:

sov

Be it known that i, n SS 0. SHAW, a an;

'zen o f the United States and resident of; the

city of Montreal, inthe Province of vQuebec and Dominion of Canada, haveinvented certain new and useful Improvements in Repair King Posts for-Bolsters, of which the followingis a-full, clear, and exact description.

This invention relates to improvements in truck bolster construction andparticularly to improvements in constructionof king posts for use in themanufacture or repair of truck bolsters. The primary objectoftheinvention is to provide ajking'po'st adapted for insertion in abolster withoutthe'necessity of taking apart thecomp'ressio'n. andtension members. a At the present-time. bolsters arerendered breakingor. by reasonofthe members of the bolster'stretching or buckling, withthe result that the bolster becomes loose and rattly. and constitutes ayielding structure" in place of the desired rigid structure. Thebolsters usually comprise a channel compression member and a tensionmember in the form of a flat plate, although many bolsters are foundwith tension members of circular,

channel or other cross sections. In order to replace'a broken king,post, it isnecessary to take the .bolster apart, and, in'the [case of abolster having afiat plate tension member, f

this involves the cutting out of rivets and the unloending of thetensionmember to disengage same from the compression member.

The same applies to bolsters having certain other types of tensionmembers butdoes not as a rule apply to 'bolsters'having tension ,membersof circular cross section, as such tension members areusuallyheld bynuts. The operations of cutting out the rivets and taking'apart thebolster do not improve the strength of the members and require'suchanexpenditu re of time and labor that very little is saved over the costof a new bolster.

, When a bolster becomes loose from change. in

the length of its members, it can be'tightenedup'only by inserting alonger king post. Y

The driving of shims between the king post and one of the members is notto be. tolerated and, as a'new king post can be inserted only by takingthe bolster apart, the same'expense is incurred as if the king post wasbroken.

This condition does not obtain with bolsters in which the tensionmembers are securedby I T The presentf'nvention resides in post. which,is 'constru'eted' in la plurality of parts,twoj.at least of which meetin a*-plane out'of normal tojthejaXiso-f the post, so thatproperjrelative'movement of the parts exerts a wedging action for "thepurpose o[elon'-.

. tension? members; useless either by reason of'th e king post i 1 Fig.1 is "a king postco'nstruction'. 1'. p a r. Referring morepartlcula'rlyrto thefidrawings, 11 designates the compression member offa bolster, which isjshown "asof channel sue; smear au terity heightendi);

as, es ee. he Pre ent n nti m prov de a king post which "may be insertedr in abolster eithertoreplace a broken-king post or to tighten p '-.th el bo'lster without so tak ngffapart the compression"? and tension fmembers thereof. l lThe, invention therefore applies. particularly{bolsters oftypes wherein. the compressionand tension memhere are notadjustablyconnected. w theking mgating the postbetween thecompressionand vention 1 of the form to which s applicablej" formedaccordingtothis'invention.

Fig. Sis a section thereof o jtne1ine-"3 3 Fig. 4 1s a diagram'illustrating"-a king post designed tor anotherjtype-k of bolster. i

1 Fig-:5, illustrates a slight m'odification'of cross .secti'on,-and 12the tension. member of the bolstergi-whichis sh'own'in Figure's 1to 3 av inclusive,as formedfof a" I'la.'t',,-plate -bendjati its endsbverthefendsf'ofthe compression member and secured'by any suitable number ofrivets-l3j The'king postydesignated as a who l'e bythenumeral'll,isinserted'between the 'co,inpression and' tension membersmidwayfbetween theen'ds thereof and forms a truss ofthe' whole(structure? The king post is held against movement longitudinally of thebol's'ter'by'riv'ets lo-which connect" it to thecOmpreSsiOn'member andis held 'jagainst movem'ent transversely of iithe bolster" by 1 reasonof its engagement between the flan es "of the channelled 'comp'ressionmemberg 4; n

the simple form illustratedin Figures 11- to;

f rivets or flanges on either *mei'nbenengaging the other." 'In Figi1re'4,there is illustrated i the drawin which llustr te-tire mf ajnngqpbst8,1tl1ere is no connectionbetween the king partial planvi'ew ofabolsterf thepresent invent'ion postand tension membereitherby way; of Ii I rivets 15.

a king. post embraced between flanges of a channel-shaped tension member12 and, in Figure 5, there is illustrated a king post having thereonflanges to embrace a tension member of any suitable section.

In all the forms illustrated, the king post comprises a plurality ofmembers of which one member, designated 16, replaces the upper end ofthe ordinary king post and is mustered tothe compression member by the II The, remalnder of the king post isformed of .one .orxm'pre membersaccording to the type of post or the type of bolster.

Inthe simple formof' bolster the remainder of the post is a singlemember 17, adapted for engagement with the tension, member and with themember 16. The meeting faces 18 of these members are inclined out of normal to the axis of the kingpost, as clearly shownin .FigureQ, theinclination being in the transverse direction of the bolster. Thesemeeting. faces are, preferably formed Q11 plates 19 which extend Withouta break through the full cross. section of the king post at the planeofmeeting. These plates are supported not only by the peripheral frame 20of the post parts but also by suitably disposed webs 21. In order toavoid 4 Da ny slippage of the parts 16 and 17 in the longitudinaldirection of the bolster, one of the plates 19 is grooved asat 22'andthe other plate is provided with a rib 28 adapted for engagement inthe groove. Tt'is immaterial upon which of the members the operate totighten the bolster The two -,introduced between the'member 16 and thetension member12, the inclined faces 18 v of thetwomembers 16, 17 beingin engagement. The member 17 is now pressed into place and beingslightly wedge-shaped, as will be readily seen from the drawings, willparts 16 and 17 are then connected together,

to lprev'ent'jthe part 17 backing out, by any suitable numberofrbolts-or' rivets 24 connecting the plates 19. l

' The operation of inserting a king post as described in the precedingparagraph is pos- ,sible' only where the tension member of the bolsteris a fiat plate or where the specifications of vthe king post do notrequire it to embrace the tension member. In such cases, the king postis constructed preferablyv in three parts, as indicated in Figures 4;and 5,

the additional or intermediate part being designated 25 and the footmembers 17f and 17 In assembling a king post of this construction, thehead and foot members are placed in engagement with the compression andtension members respectively and the intermediate member 25 thendrivenwedge- W186 between them and secured to both, The

meeting faces of the wedge and one of the other members will ofnecessity be inclined or out of normal to the post axis, as de scribedin connec'tionwith Figures 1 to 3, in order to obtain the desiredwedging 'action. It will be understood, however, that in the three-pieceking post all the meeting faces may be inclined, as is indicated inFigure 1, or that the meeting faces of only two of "the parts maybeinclined as'indicated in Figure 5. The detail structure of the mem"-'bers of the three-piece king post will be substantially the same as thedetailed structure of the'two-piece post, that is to say, all the partswill preferably have tongue and groove connection In a three-part kingpost, it will be possible to drive the intermediate or wedge member inthe longitudinal direction of the bolster and it'will be understoodthat, although thls method 1s not as desirable as driving in'thetransverse directlon, it

is nevertheless contemplated and included in v the following claims. I aWhile the invention may be said to be designed primarily to provide forthe repair of damaged bolsters, it will be understood that it maybeemployed to facilitate the construction of new bolsters, as itwillobviate the present necessity of connecting the tension member undernecessarily great tension as the members may be connected together firstand the king post inserted after wards. The plate 19 of the upper member16 ofthe king post provides a shelf to sup port the king pin so that aheadless pin maybe used without any danger of the same falling out orwithout the necessity of i any other means being used to hold the pininplace.

Having thus described myinventiomwhat I claim is p 1. A king postcomprising a body divided transversely into a pair of superimposed partsmeeting along a line inclined withirespect to the axis of the post andextending entirely across the post.

2. A king post comprising a body divided into a pair of parts, one ofwhich is insertable to extend entirely across the end of the other partto exert a'wedging action'therebetween and one of the members of thebolster.

3. A king post according to claim 1, in-

eluding means connecting the parts together to prevent relativemovementthereofl I 4:. A bolster comprising compression and tensionmembers connected attheir ends, and a sectional king post insertedbetween said members, one of the sections of the post being designed forinsertion last to exert a wedge action to tighten the bolster, theengaging surfaces oi said sections being disposed symmetrically aboutthe axis of the post.

5. In combination with a device according to claim A, means for holdingthe king post parts against slipping relatively to one another in adirection other than the inserting direction.

6. In combination with a device "according to claim 4, meansfor holdingthe king post parts against relative movement after insertion.

7. In combination with a device according to claim 4:, means for holdingthe king post parts against imdesirable relative movement duringinsertion, and means for holding the parts against any relative movementafter insertion.

8. A device according to claim 4, in which the parts have tongue andgroove connection. 3

9. A king post comprising an outer peripheral frame formed in aplurality of sec-, tions, plates connected between the parts of theframe in each of the several sections, the plates of each part beingadapted for engagement with the plates of the adjacent parts, and Webssupporting the peripheral frame and said plates.

10. i A device according to claim 9 in which the parts of thepost'separate in planes extending transversely of the post axis.

11. A device according 'to claim 9, in which the parts separate inplanes extendingtransversely of the post axis, the plane of I separationbetween twoof the parts being out of normal to the axis.

12. A device according to claim 9, in

which the plates are formedto provide V tongue and grooveconnection'between the parts. I I

13. A king post comprising a pair of members abutting in a planeextending transversely of the post axis, each of said parts includingplate upon which the abutting surfaces" are formed, saidgplate in oneofsaid parts serving asa king pin support, 50

and fastening members connecting said plates." g Y i g 14 A kingpostcomprising a pairof engaging parts, one being adapted to. extendentirely acrossthe inner transverse surface? of the compression member,and the other 'v to extend entirely across the inner transverse surfaceof the tension'member, the engaging surfaces of said parts being out ofnormal to the axis of the post.

15. A sectional king post comprising sections having 1ncl1ned engagingsurfaces and J fastening members connecting said sections together andintersecting said engaging su r faces.

16. A king post comprising separate coma pression and tension memberengaging'sections, and removablemeans'engaging-both of said sectionsserving to hold .saidsections' engaged with said members.

17. A king post. comprising engaging parts having inclined engagingsurfaces, a tongue and grooveconnection between the engaging surfacespreventing lateral shifting thereof, and fastening members inter sectingsaid engaging surfaces and preventing longitudinal shifting thereof.

In witness whereof, my hand.

ROSS o. S A

I have hereunto set

